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U3 Hbio water, Cell Transport, cell membranes, feedback loops

Total questions: 70

Worksheet time: 2hrs 50mins

Name
Class
Date
1.
What is another term for "selectively permeable"?
a)
porous
b)
completely permeable
c)
permanent
d)
semipermeable
2.
Most of the cell membrane is made of...
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic acids
3.
What forms the channels and pumps in the phospholipid bilayer?
a)
carbohydrates
b)
proteins
c)
hydrophilic heads 
d)
lipids
4.
Which of the following is NOT part of the cell membrane?
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic Acids
5.
Which of the following is responsible for getting large or charged (polar) molecules across the cell membrane?
a)
E
b)
B
c)
C
d)
D
6.
Part of the plasma membrane responsible for cell recognition... 
a)
C
b)
E
c)
B
d)
D
7.
The function of the plasma membrane is....
a)
to regulate what enters and leaves the cell.
b)
fight bacteria and viruses that enter the cell.
c)
provide rigid support and protection to the cell.
d)
make sure each cell can move
8.
The _____ in the plasma membrane prevents the fatty acids tails from sticking together. 
a)
carbohydrate chains
b)
cholesterol
c)
proteins
d)
lipids
9.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
10.
Hydrophilic means...
a)
water-loving
b)
water-fearing
c)
nonpolar
d)
lipid soluble
11.
A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 
a)
phospholipid 
b)
Carbohydrate
c)
Cholesterol 
d)
Protein 
12.
"Water Fearing" 
a)
Hydrophobic
b)
Hydrophilic 
c)
Hydroelectric 
d)
Hydroloric
13.
Describes the arrangement of the cell membrane as bendable and made of many parts. 
a)
The Fluid Mosaic Model 
b)
The Major Mobility Model 
c)
The Crazy Cell Model
d)
The Maze Model
14.
___________ allow cells to recognize each other and act like ID tags. 
a)
Carbohydrates 
b)
Proteins
c)
Phospholipids 
d)
Cholesterol
15.
___________ strengthens and stabilizes the cell membrane.
a)
Carbohydrates 
b)
Proteins 
c)
Phospholipids 
d)
Cholesterol
16.
___________ form the two layers of the cell membrane. 
a)
Carbohydrates 
b)
Proteins 
c)
Phospholipids 
d)
Cholesterol
17.
All cells have a:
a)
Nucleus
b)
Plasma membrane
c)
Cell wall
d)
Buddy
18.
What does "bilayer" mean?
a)
one layer
b)
two layers
c)
laminated
d)
bilateral
19.
What are the carbohydrates in the cell membrane for?
a)
to form channels and pumps
b)
to help cells identify one another
c)
to make the membrane strong
20.

In passive transport, the concentration gradient goes from..

a)

Low to low

b)

High to low

c)

Low to high

d)

High to high

21.
The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration is called
a)
Osmosis
b)
Simple Diffusion
c)
Active Transport
d)
Passive Transport 
22.
Osmosis is the diffusion of __________.
a)
water
b)
glucose
c)
air
d)
passive transport
23.
Passive transport requires no
a)
concentration gradients
b)
osmosis
c)
motion
d)
energy
24.
When particles move out of a cell through facilitated diffusion, the cell ____________.
a)
Gains energy
b)
Uses energy
c)
Releases energy
d)
Does not use energy
25.
Which type of Passive Transport is being represented in this picture?
a)
Passive Diffusion
b)
Simple Diffusion
c)
Active Diffusion
d)
Facilitated Diffusion
26.
Large molecules are released by cell by 
a)
Endocytosis
b)
Exocytosis
c)
Passive transport
d)
Phagocytosis
27.
Bacteria are engulfed by
a)
Pinocytosis
b)
Receptor mediated endocytosis
c)
Exocytosis
d)
Phagocytosis
28.
Cell membrane is made up of 
a)
Polar heads, non-polar tails
b)
Non-polar heads, polar tails
c)
Polar heads, polar tails
d)
Non-polar heads, non-polar tails
29.

Examples of particles that can diffuse across through the phospholipid bilayer include:

a)

oxygen and carbon dioxide

b)

sugar

c)

water

d)

calcium ions

30.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
31.
During osmosis
a)
water moves from high to low concentration
b)
large or oddly shaped molecules move across a cell membrane
c)
water moves when energy is used
d)
proteins are built
32.
When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of
a)
Osmosis
b)
Diffusion
c)
Equilibrium
33.
If there is 5 percent water inside a cell and 5 percent water outside a cell
a)
more water will move inside the cell
b)
more water will move outside the cell
c)
There will be no movement of water cells
34.
Passive transport requires no
a)
concentration gradients
b)
osmosis
c)
motion
d)
energy
35.
The picture is an example of...
a)
active transport
b)
passive transport
c)
diffusion
d)
osmosis
36.
What does the "fluid mosaic model" mean about the cell membrane?
a)
It can dissolve into fluid.
b)
The cell is mostly made of mosaic molecules.
c)
It looks like a flexible pattern made up of different parts.
d)
Somebody else should name these things.
37.
What is one major difference between passive and active transport?
a)
Passive transport uses energy; active transport does not.
b)
Both types of transport use energy.
c)
Active transport uses energy; passive transport does not.
d)
No difference. They are both the same.
38.
What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a carrier protein?
a)
Diffusion
b)
Osmosis
c)
Active Transport
d)
Facilitated Diffusion
39.
This picture represents what type of cell transport?
a)
endocytosis
b)
exocytosis
c)
osmosis
d)
passive transport
40.
The cell below is in a _________ solution.
a)
Hypotonic
b)
Hypertonic
c)
Isotonic
41.
The cell below is in a _____________ solution.
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
42.
A cell in an isotonic solution will
a)
swell
b)
shrink
c)
stay the same size
d)
impossible to tell
43.
When a cell is placed in a hypertonic solution water
a)
moves from the inside of the cell to the solution
b)
moves from the solution to the inside of the cell
c)
moves equally in and out of the cell
d)
none of these
44.
A cell will __________________ in a hypotonic solution.
a)
swell and perhaps burst (lyse)
b)
shrink
c)
the size of the cell will not change
d)
the size of the cell will change from large to small and from small to large
45.
When the concentration of particles inside of a cell is the same as the concentration of particles outside of the cell. 
a)
active transport
b)
concentration
c)
diffusion
d)
equilibrium
46.

Which example describes diffusion?

a)

Water moving across a semi-permeable membrane

b)

Baking cookies and smelling them throughout the house

c)

Ions moving through an ion channel

d)

All of the above

47.

Which answer best describes cohesion?

a)

Water molecules are attracted to other molecules

b)

Water molecules are polar

c)

Water molecules are attracted to other water molecules

d)

Water moves up against gravity in plants

48.

Which atom(s) in a molecule of water is/are partially positive?

a)

Oxygen

b)

Carbon

c)

Nitrogen

d)

Hydrogen

49.

What property of water deals with ice floating?

a)

Cohesion

b)

Adhesion

c)

Density

d)

Capillary Action

50.

How does ice float?

a)

As water freezes, the space between molecules expand, decreasing its density

b)

As water freezes, it takes up more oxygen from the air, increasing its density

c)

As water freezes, it takes up more hydrogen, increasing its density

51.

Water is referred to as the 'universal' solvent because it...

a)

Dissolves everything

b)

Is dissolved by most things

c)

Dissolves most things

d)

Can be found anywhere

52.

Capillary action is the result of waters properties of cohesion and adhesion working together to allow water to...

a)

Absorb water through the roots of plants

b)

Stick to other things

c)

Stick to itself

d)

Flow upward against the force of gravity

53.

What property of water allows for hydrogen bonding?

a)

Water as a solvent

b)

Water is polar

c)

Water has a high specific heat

d)

Water is less dense as a solid

54.

Water dissolves many ionic and polar substances because of waters...

a)

Ionic bonding

b)

Covalent bonding

c)

Specific heat

d)

Polarity

55.

Waters temperature changes...

a)

Quickly, without adding much energy

b)

Slowly, by adding a lot of energy

c)

Slowly, without adding much energy

d)

Quickly, by adding no energy

56.

The "film" that forms on top of water is referred to as...

a)

Adhesion

b)

Capillary action

c)

Surface tension

d)

Cohesion

57.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
58.

Which of the following is LEAST likely to dissolve in water?

a)

nonpolar fats and oils

b)

polar sugar molecules

c)

salt made of a positive sodium ion and a negative chloride ion

d)

all of the substances will dissolve easily in water

59.

Why does water move from the roots to the leaves of plants?

a)

Water is pushed by solutes

b)

Capillary action pulls the water molecules up like a chain

c)

Water is pulled by gravity

d)

Water cannot move up roots to leaves

60.

Water’s unique properties arise because of its ability to form strong:

a)

covalen bonds

b)

hydrogen bonds

c)

dipole bonds

d)

ionic bonds

61.

What is the point of a feedback loop?

a)

To provide the body with more energy

b)

To provide the body with more food

c)

To make sure the conditions in the body are always changing

d)

To make sure the conditions in the body remain stable

62.

A feedback loop best fits which characteristic of life?

a)

Cells

b)

Organization

c)

Homeostasis

d)

Adaptation

63.

In this body temperature feedback loop, predict what would happen if cooling mechanisms were NOT activated?

a)

The body would not warm up.

b)

The body would not cool down.

c)

Your body would get colder and colder.

d)

Your body would release lots of heat.

64.

According to the feedback loop, what does high blood sugar promote?

a)

Insulin Release

b)

Glucagon Release

c)

Insulin Uptake

d)

Glycogen Uptake

65.

What happens if stretch receptors are activated in the uterus?

a)

Oxytocin will cause uterine muscles to relax

b)

Contractions will get weaker

c)

The baby will be born later than normal

d)

The brain will signal for the release of oxytocin

66.

What is the difference between what will happen if their is too much Glucose or too little Glucose? SELECT ALL THAT APPLY

a)

With too much Glucose, Insulin is released. With too little Glucose, Glucagon is released.

b)

With too much Glucose, the pancreas produces insulin. With too little Glucose, the pancreas produces glucagon.

c)

With too much Glucose, Glucagon is released. With too little Glucose, Insulin is released.

d)

There is no difference.

67.
The two types of feedback systems that help organisms maintain homeostasis are:
a)
positive and negative 
b)
receptor and effector
c)
static and dynamic
d)
minor and major
68.
The process of childbirth is an example of:
a)
negative feedback loop
b)
positive feedback loop
69.
The "cause" for something to happen is the
a)
response
b)
effect
c)
stimulus
d)
homeostasis
70.
The "effect" of a given stimulus is the...
a)
response
b)
stimulus
c)
cause
d)
result

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